Prosecutor upsets Justine Damond's family

Minneapolis' top prosecutor says he does not have enough evidence to charge the police officer who shot dead Australian life coach Justine Damond in an alley.

Hennepin County Attorney Mike Freeman previously flagged he would make a decision on whether to charge Minneapolis Officer Mohamed Noor before the end of the year, but that timeline now appears unlikely.

Mr Freeman told activists who confronted him at a Minneapolis union event, he wanted to make a charging decision by Christmas.